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F. W. MIX & G. B. COWLES.

TRUNK LOCK.

No. 331,427. Patented Dec. l, 1885.

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:NITED STATES PATENT Orricn.

FRANK W. MIX AND GEORGE B. COWLES, OF NEV BRITAIN, CONNECTICT, ASSIGNORS TO THE CORBIN CABINET LOCK COMPANY, OF SAME PLACE.

TRUNK-LOCK.

SPECIFICATION forming part of Letters Patent No. 331,427, dated December' 1, 1885. Application filed March 30, 1885. Serial No. 160,596. (Model.)

To LZZ whom it may concern.-

Be it known that We, VFRANK W. MIX and GEORGE B. CoWLEs, citizens of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Trunk-Locks, of which the following 1s a specification.

Our invention relates to improvements in that class of trunk-locks in which the lock proper is mainly inclosed within a round boss `on the end of the hasp.

The operation of our lock is substantially the same as in prior locks of the same class.

'The object of our improvements is to so simplify the construction as to save milling and other labor, whereby the lock can be produced at less cost than heretofore. In the accompanying drawings, Figure l is a front elevation of our lock with the capplate removed. Fig. 2 is a transverse section of the same on line :cx of Fig. l, together with the keeper. Fig. 3,is a section of the circular bolt. Fig. 4 is aside elevation of the central post. Fig. 5 is a sectional View of the circular bolt, illustrating another way of securlng the central part therein. Fig. 6 is aside elevation of the key for our lock, and Fig. 7 is a view of the rear side of the bolt.

A designates the swinging member of the hasp, in the lower end of which is formed the lock proper, the saine being mainly Within the recessed boss or circular projection B, Fig. 2. On the back ofthe bossB is a smaller central boss, a, Fig. 2, the thickness of which 1s fully equal to or a little in excess of that of the metal in the back of the keeper-socket D, Fig. 2.

C designates the circular bolt, having a central hub, b, by which it is centered in its partial revolution within the case. For a doublebitted key like Fig. 6,two curved slots, c, are made through the bodyor disk portion of the -bolt C, said slots being made at a point farther from the axis of said bolt than the periphery of the central hub, b, so that they may be made by punching on a power-press, and thereby avoid milling. These slots are for the points cl of the key to enter for throwing the bolt. For a single-bitted key only one of the slots c will be required. Ihe bolt C is also provided vwith a fence, e, Fig. 1, for

the tumblersf to act upon. The central post, g, is formed of wire and then secured Within the bolt. Fig. 3 shows the bolt drilled and countersunk ready to receive said post, in which it will be noticed that the countersink is quite deep. The end of the post gis headed and the head is beveled on both sides, as shown. In order to secure it within the bolt, it is driven in until the under side of its head rests upon the bottom of the countcrsink in the bolt, and thenv the metal in the central hub, b, which surrounds said head, is riveted downupon the opposite side of the head of the post Lr/,to prevent it from working endwise out of place.

As in prior locks of this class, the part of the bolt which engages the keeper D is an oblong button, E, Figs. 2 and 7. Ve make this button E of sheet metal by merely cutting it out with dies and beveling or countersinking its square central hole. It is then secured to the bolt by riveting it upon the squared tenon at the end of the central hub, b. The riveting of the button E and central post, g, can be done at one operation.

If desired, instead of the central post with a double-beveled head, as in Fig. et, a post, g', may be made with a raised shoulder, lo, near the middle of its length, and the hole in the bolt C be countersunk at both ends, and then secure the post by riveting down its end, all as shown in Fig. 5.

Ve claim as our inventionl. In a lock of the class shown and de scribed, the circular bolt having central hub and disk-shaped portion, with the curved slot c made through said disk-shaped portion, substantially as described, and for the purpose specified.

2. In a lock of the class described, the circular bolt having the central hub and hole with deep countersink formed in `said hub, and the central post, g, having the doublebeveled head secured wthinsaid countersunk hole in the hub, substantially as described, and for the purpose specified.

FRANK W. MIX. GEORGE B. COVLES.

Witnesses:

S. C. DUNHAM, Gmo. W. GoRBiN. 

